A pregnant client at 32 weeks gestation with gestational diabetes mellitus is admitted for blood glucose management. Her fasting blood glucose is 140 mg/dL and postprandial glucose is 180 mg/dL. Which nursing intervention should be the priority?
1Administer insulin as prescribed and monitor for hypoglycemic episodes
2Assess fetal movement patterns and schedule non-stress test immediately✓ 정답
3Implement strict bed rest and monitor for signs of preterm labor
4Increase dietary carbohydrate intake and monitor weight gain patterns
해설
Fetal surveillance is the priority intervention when maternal blood glucose levels are poorly controlled in gestational diabetes. Other options are important but not immediate priorities compared to assessing fetal well-being.
The client is at 32 weeks gestation with gestational diabetes mellitus (GDM) and presents with a fasting blood glucose of 140 mg/dL and a postprandial glucose of 180 mg/dL. These values are significantly elevated above the typical GDM targets (fasting <95 mg/dL and 1-hour postprandial <140 mg/dL). The priority nursing intervention in this scenario is to assess fetal movement patterns and schedule a non-stress test immediately.
Why Fetal Assessment is the Priority
The core rationale lies in the direct pathophysiological link between maternal hyperglycemia and acute fetal compromise. When maternal blood glucose is persistently high, excess glucose crosses the placenta via facilitated diffusion. The fetal pancreas responds by increasing insulin secretion. Because insulin acts as a potent anabolic hormone, this state of fetal hyperinsulinemia drives excessive nutrient storage, leading to macrosomia and, more critically, increased metabolic activity and oxygen consumption.
In the third trimester, this elevated fetal oxygen demand can outstrip the placental oxygen supply, resulting in relative fetal hypoxemia. This hypoxic stress is a direct trigger for decreased fetal movement and can lead to non-reassuring fetal heart rate patterns, stillbirth, or the need for emergent delivery. The non-stress test (NST) is the primary screening tool to evaluate fetal well-being by assessing the fetal heart rate’s reactivity, which is a direct indicator of an adequately oxygenated and non-acidotic fetal central nervous system. Given the dangerously high glucose levels at 32 weeks, the immediate threat is fetal distress, making assessment the highest priority over interventions that have a slower therapeutic onset.
Analysis of Other Options
- Option 1 (Administer insulin): While administering insulin is a necessary intervention to correct the hyperglycemia, its effect is not immediate. The priority is to first ascertain if the current metabolic derangement has already caused fetal compromise. The nursing process dictates assessment before implementation of a new treatment, especially when a life-threatening fetal condition is a potential consequence.
- Option 3 (Strict bed rest): Bed rest is not a primary intervention for uncontrolled GDM and does not address the immediate pathophysiological threat of fetal hypoxemia caused by hyperglycemia. Monitoring for preterm labor is important but secondary to directly evaluating the fetus's current status.
- Option 4 (Increase carbohydrate intake): This intervention is contraindicated. The client’s blood glucose levels are already critically high. Increasing carbohydrate intake would exacerbate the hyperglycemia, further elevating fetal insulin production, oxygen consumption, and the risk of fetal distress and demise.
Connecting to the PRECEDE-PROCEED Model
The provided evidence highlights the importance of structured educational programs, such as those based on the PRECEDE-PROCEED model, to improve knowledge and health behaviors in women with GDM . This model emphasizes that effective management requires addressing not just the biological factors, but also the behavioral and environmental determinants of health. In this acute scenario, the client’s severely elevated glucose levels suggest a critical gap in the predisposing, enabling, or reinforcing factors that support glycemic control. While the immediate priority is fetal safety, this event underscores the necessity for a comprehensive educational reassessment. The nursing team must subsequently investigate the root cause of this hyperglycemic crisis—whether it stems from a knowledge deficit, dietary non-adherence, inadequate self-monitoring skills, or psychosocial barriers—and implement a targeted, model-driven educational plan to prevent recurrence and mitigate long-term risks for both mother and fetus .
Clinical Scenario
A 32-week pregnant client with gestational diabetes mellitus (GDM) is admitted with a fasting blood glucose of 140 mg/dL and a postprandial glucose of 180 mg/dL. Both values significantly exceed target ranges (fasting ≤95 mg/dL, 1-hour postprandial ≤140 mg/dL), indicating poorly controlled GDM.
Priority Nursing Intervention
The immediate priority is to assess fetal well-being. Poorly controlled GDM increases the risk of placental insufficiency, fetal hypoxia, and stillbirth. A non-stress test (NST) is a non-invasive method to evaluate fetal oxygenation and neurological status by monitoring fetal heart rate reactivity.
Rationale for Prioritization
Fetal assessment takes precedence over medication administration in this scenario because the elevated glucose levels pose a direct threat to the fetus, and the NST provides immediate data on fetal status.
Insulin administration will be necessary but follows the initial fetal evaluation to ensure the fetus is not already in distress.
Bed rest and increased carbohydrate intake are not indicated; bed rest has no proven benefit for GDM, and more carbohydrates would exacerbate hyperglycemia.
Clinical Practice Guidelines
Fetal Surveillance: For GDM with poor glycemic control, antenatal testing (NST or biophysical profile) typically begins at 32-34 weeks or earlier if indicated.
Glycemic Targets: Aim for fasting <95 mg/dL, 1-hour postprandial <140 mg/dL, or 2-hour postprandial <120 mg/dL.
Interdisciplinary Care: Collaborate with endocrinology and maternal-fetal medicine for insulin titration and delivery planning.
Patient Education: Teach the client to monitor fetal kick counts daily and report any decrease in movement immediately.
Non-Stress Test (NST) — A prenatal test assessing fetal heart rate in response to fetal movement to evaluate oxygenation and neurological status, commonly indicated in high-risk pregnancies like poorly controlled GDM.
Gestational Diabetes Mellitus (GDM) — Glucose intolerance with onset or first recognition during pregnancy, associated with increased risks of fetal macrosomia, stillbirth, and neonatal hypoglycemia.
Fasting Blood Glucose Target in GDM — Typically recommended to be ≤95 mg/dL; a value of 140 mg/dL indicates significant hyperglycemia requiring immediate intervention and fetal evaluation.
Postprandial Glucose Target in GDM — Usually targeted at ≤120-140 mg/dL 1-2 hours after meals; a level of 180 mg/dL suggests poor glycemic control and potential fetal risk.